20042430031 has 8 divisors (see below), whose sum is σ = 22280418944. Its totient is φ = 17903907360.

The previous prime is 20042429987. The next prime is 20042430061. The reversal of 20042430031 is 13003424002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20042430031 - 2¹⁹ = 20041905743 is a prime.

It is a super-2 number, since 2×20042430031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20042429990 and 20042430008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20042430061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24866136 + ... + 24866941.

It is an arithmetic number, because the mean of its divisors is an integer number (2785052368).

Almost surely, 2^20042430031 is an apocalyptic number.

20042430031 is a deficient number, since it is larger than the sum of its proper divisors (2237988913).

20042430031 is a wasteful number, since it uses less digits than its factorization.

20042430031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49733121.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 20042430031 its reverse (13003424002), we get a palindrome (33045854033).

The spelling of 20042430031 in words is "twenty billion, forty-two million, four hundred thirty thousand, thirty-one".